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Percentage Increase and Decrease Worksheet

Quantitative aptitude lesson 11: Percentage increase and decrease · Set 224 · 40 questions
TalentJR

The method (Start value is 100%): New value after a rise of p%: value + p% of value. After a fall: value − p% of value. Percent change = change ÷ starting value × 100. Two changes a% and b% one after the other: a + b + (a × b) ÷ 100, with a fall counted as minus.

NameDateTime takenScore ___ / 40
  1. 1.The price of a bicycle is ₹2880. It goes up by 25%. What is the new price (in ₹)?
  2. 2.A shop sells 3480 cups of tea a month. Next month it sells 25% more. How many cups does it sell next month?
  3. 3.A price goes up by 25% and then goes up by 20% more. By what percent has it gone up in all? =
  4. 4.The price of a bicycle is ₹2480. It goes up by 25%. What is the new price (in ₹)?
  5. 5.A town has 2880 people. Its population grows by 25%. How many people live there now?
  6. 6.A town has 4280 people. Its population grows by 50%. How many people live there now?
  7. 7.The price of a bicycle is ₹120. It goes up by 5%. What is the new price (in ₹)?
  8. 8.A water tank holds 2320 litres. 20% of the water is used. How many litres are left?
  9. 9.A water tank holds 3060 litres. 40% of the water is used. How many litres are left?
  10. 10.A water tank holds 3560 litres. 10% of the water is used. How many litres are left?
  11. 11.A price goes up by 30% and then comes down by 5%. By what percent has it gone up in all? =
  12. 12.A water tank holds 1420 litres. 40% of the water is used. How many litres are left?
  13. 13.The price of a bicycle is ₹3440. It goes up by 20%. What is the new price (in ₹)?
  14. 14.The price of a bicycle is ₹2280. It goes up by 5%. What is the new price (in ₹)?
  15. 15.A town has 1620 people. Its population grows by 5%. How many people live there now?
  16. 16.The price of a bicycle is ₹380. It goes up by 50%. What is the new price (in ₹)?
  17. 17.A shop sells 3540 cups of tea a month. Next month it sells 5% more. How many cups does it sell next month?
  18. 18.A water tank holds 240 litres. 5% of the water is used. How many litres are left?
  19. 19.A shop sells 760 cups of tea a month. Next month it sells 40% more. How many cups does it sell next month?
  20. 20.The price of a school bag changes from ₹3560 to ₹2670. By what percent did it come down?
  21. 21.The price of a school bag changes from ₹3800 to ₹1900. By what percent did it come down?
  22. 22.A price goes up by 30% and then goes up by 30% more. By what percent has it gone up in all? =
  23. 23.A town has 260 people. Its population grows by 15%. How many people live there now?
  24. 24.The price of a school bag changes from ₹1200 to ₹600. By what percent did it come down?
  25. 25.A water tank holds 4240 litres. 20% of the water is used. How many litres are left?
  26. 26.A shop sells 2340 cups of tea a month. Next month it sells 10% more. How many cups does it sell next month?
  27. 27.The price of a school bag changes from ₹4880 to ₹4392. By what percent did it come down?
  28. 28.A water tank holds 1140 litres. 25% of the water is used. How many litres are left?
  29. 29.A price comes down by 40% and then comes down by 50% more. By what percent has it come down in all? =
  30. 30.A price goes up by 15% and then goes up by 30% more. By what percent has it gone up in all? =
  31. 31.A water tank holds 4840 litres. 50% of the water is used. How many litres are left?
  32. 32.The price of a school bag changes from ₹1420 to ₹1704. By what percent did it go up?
  33. 33.The price of a school bag changes from ₹2840 to ₹3266. By what percent did it go up?
  34. 34.The price of a school bag changes from ₹3620 to ₹2534. By what percent did it come down?
  35. 35.The price of a school bag changes from ₹4500 to ₹5850. By what percent did it go up?
  36. 36.The price of a school bag changes from ₹2700 to ₹2160. By what percent did it come down?
  37. 37.A price goes up by 10% and then goes up by 5% more. By what percent has it gone up in all? =
  38. 38.A price comes down by 5% and then comes down by 5% more. By what percent has it come down in all? =
  39. 39.A water tank holds 1620 litres. 50% of the water is used. How many litres are left?
  40. 40.A water tank holds 420 litres. 15% of the water is used. How many litres are left?

Answer key

  1. 3600
  2. 4350
  3. 50
  4. 3100
  5. 3600
  6. 6420
  7. 126
  8. 1856
  9. 1836
  10. 3204
  11. 23.5
  12. 852
  13. 4128
  14. 2394
  15. 1701
  16. 570
  17. 3717
  18. 228
  19. 1064
  20. 25
  21. 50
  22. 69
  23. 299
  24. 50
  25. 3392
  26. 2574
  27. 10
  28. 855
  29. 70
  30. 49.5
  31. 2420
  32. 20
  33. 15
  34. 30
  35. 30
  36. 20
  37. 15.5
  38. 9.75
  39. 810
  40. 357

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